Log washer



J. C. JACOBSON LOG WASHER Filed July 1925 2 Sheets-Sheet 1 J. C.JACOBSON LOG WASHER 2 Sheets-Sheet 2 Filed July 1925 Patented Dec. 7,1926.

U- lTED s JOHN C. JACOBSON, OF .MINNEAPOLIS, MINNESOTA, ASSIGHOR TOHERBERT W.

GUETTLER, OI CHICAGO, ILLINOIS.

LOG WASHER.

Application filed July 22,

. My invention relates to logwashers, particularly adaptable inthepapermaking 1ndustry for washing ofi'the .logs following the rossingoperation.

One of the important objects of th mvention is to produce improvedwashing mechanism which can be interposed in the conveyor train'to'washthe logs after rossing provided with washing water directioning itwhich lates 14.

while traveling toward pulp grinders, chipers or other apparatus.Another object 18 to provide a washing structure in the form of aconveyor link adapted to be readily interposed in the log conveyortrain, and

means and water discharging means, so that the logs will be washed enroute to their destination.

Another important object is to produce improved arrangement of conveyorrolls adapted to vertically reciprocate or agitate the logs and alsoprovided with pegs or spurs arranged to cause the logs to roll from sideto side while they are vertically reciprocated and while they aretraveling along the'washer, whereby all sides of the logs will besubjected direct streams of waterpowerfully against all sides and endsof the ogs and in different directions, so that the cracks and crevices.will be thoroughly The above and other features of my invention areincorporated in the structure shown on the accompanying drawings, in

Figural is a side elevational view of the. washer;

a Fig. 2 is a plan view: and

Fig.3 is an enlarged sectional view on line 3-3 of Fig. 1.

The washer supporting structure has the vertical frames F, eachcomprising the side uprightslO and 'the'connecting cross pieces 11. Attheir lower ends the frames arelongitudinally spacedand connected by thebeams 12. Near their upper ends the frames are spaced and held by theopposed longitudinally extending channel beams 13 and 14, which areconnected together by cross I These panel beams support the ringfittings 15am 16, in which are journaled the driving shafts 17 for therolls 18. At one sideof the washer the shaft supports the wheels 18'which are engaged by the driving chain 19 whose lower run is to thecleaning water. An-

1925. Serial ma-cases.

supportedon the idler sprocketwheel 20.

The washer'may constitute a link in'a con I veyor train for the logs,for conveying the logs from one field of operation to another. As shown,the washer driving chain 19 is driven by means of the chain 21 whichdrives the conveyor section ahead of the washer section,- this chainengaging the sprocket wheel 22 on the shaftof the adjacent end roll ofthe washer.

The washer chain 19 4 in turn, by means of the sprocket wheel 23.

drives the driving from the conveyor mechanism driven by the chain 24and travel over the rolls of the washer structure and then are receivedbytlie conveyor section driven by the chain 21.

To keep the logs L on the conveyor rolls, inclined sides or trough walls25 and 26 are provided, the boards forming these walls be.- ing nailedto the brackets 27 extending from chain 24 for the con- '-veyor section"behind the washer link. The logs come the uprights 10. To protect thewalls against wear by the logs, they metal 28.

Arching transversely over the trough 'formed-by'the side walls 26 and 28in conjunction with' the rolls, are they pipe extensions 29 which extendfrom the trunk pipe .30, to which water is conducted from the supplypipe 31 undercontrol of a valve 32. The extensions 29 may be arcrate, orthey maybe polygonal as shown. and are provided with jet openings 33whereby vertical and, diagonalv streams are directed against the top andsides, respectively, of the logs L. Centrally below the rolls is thelongitudinally extending pipe 34 which has orifices which direct waterstreams against the underside of the logs. The streams may be given'anydesired angles of inclination, so as to strike the logs on the slant. Asshown in Fig. :1, the streams are inclined to be directed towards theoncoming'logs, and the streams from the lower pipe 34 are also'inclined.The streams thus strike the logs at all sides and from variousdirections and will thoroughly clean out the cracks and crevices.

The dirty water is all collected in a .V- shaped trough 35 supportedbetween. the beams 13 and 14 and the cross pieces lland underneath thepipe 34. The collected water runs from t e trough into a discharge pipe86 and from there to the sewer or other are faced with sheet I suitableplace. The side walls 25 and 26 co]- lect the water and trough.

The rolls 18 are tapped to receive pegs or spurs 37, the spurs beingarranged helically on each roll. I have shown three sections of rolls,A, B and C. The pegs of-the sections A and C are arranged in the samedirection, so that the logs will have a tendency to roll towards oneside of the supporting trough, whereas in the intermediate section thepegs are arranged in the opposite direction, so that the log will beforced towards the other side of the trough, the result being that as alog travels through the washer 6, it will be drawn first to one sideandthen to the other of the trough, so that the entire log area will beexposed to the water streams.

In order to vertically reciprocate or agi tate the logs so that dirtparticles may be loosened therefrom, the rolls are applied off center ontheir supporting shafts. Such ofiset from the center is alternately inopposite directions, so that while one set of rolls is moving bodilydownwardly the alternate rolls are moving upwardly, the result beingthat first one set and then the other receives the logs, so that thelogs are vertically reciprocate d or agitated while they are beingrolled back and forth laterally, and while they are traveling throughthe washer link.

guide it into the discharge Very thorough cleaning and washingthusresults.

Having describedmy invention, what I 7 claim 1s:

1. In a wood washer, the combination of a supporting structure, a row ofconveyor rolls on said structure, means for driving said rolls,propulsion projections on said rolls for engaging and propelling logsalong said rolls as they are rotated, means for directing streams ofwater against the logs as they are propelled along said rt ls, and meansvertically vibrating said rolls whereby to cause continuous verticalreciprocatbn of the logs during their travel over the rolls.

2. In a washer of the class described, the combination of a supportingstructure, a row of conveyor rolls on said structure, means for rotatingsaid rolls whereby logs received therebv will be propelled thereover,means for directing streams of water to the logs during their travelalong the rolls, means on said rolls for causing said logs toreciprocate laterally on said rolls during their travel thereover, andmeans vertically oscillating said rolls whereby to cause continuousvertical oscillation of the logs during their travel thereover.

3. In a log wa hing machine, the combination of a supporting structure,a row of conveyor olls thereon, means for rotating said r0 ls, means onsaid rolls causing vertical reciprocation thereof and of logs conveyedthereover, and means for directing streams of water against the logsuring their travel.

4. In a log washer, the combination of a supporting structure, a row ofconveyor rolls thereon, means for drlving said rolls, said rolls beingeccentrically mounted whereby to cause vertical reciprocation of logstraveling thereover, and means for directing streams of-washing waterfrom different directions against the logs as they travel over saidrolls.

5. In a log washer of the class described, the combination of asupporting structure, a row of conveyor rolls journaled on saidstructure, means for rotating said rolls, propulsion pegs arrangedhelically on said rolls and such helical arrangement being in oppositedirections on alternate sets of rolls whereby a log traveling over saidrolls will be given lateral reciprocation, and means for directingstreams of water from various angles against the logs during theirtravel over said rolls.

6. In a log washer of the class described, the combination of asupporting structure, a row of conve or rolls, shafts supporting saidconveyor rol s for rotatior means for rotating said rolls, said rollsbeing alternately offset eccentrically in opposite directic 45, wherebya 109; tr iveling thereover will be vertically reciprocated, and meansfor directing streams of washing wate to the logs during their travelover the rolls.

7. In a log cleaning machine, the combination of a supporting structure,a row of conveyor rcIs thereon, means for rotatin said rolls, meanscausing vertical oscillationof

